Pipe-coupling



L.L.FREUND.

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APPLICATION FILED IA N 3 l l 9 2 0.

1,3725676? Patented Mar. 29, 19213..,

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u n u a well sealed water tight straight joint for the pipes.

In both instances it will be apparent that close adjustment of the pipe ends is not necessary, for the reason that the elongated threaded end of the pipes may receive the coupling nut and the nut be shifted thereon in making the fitting until the desired ad- I justment is accomplished with the end carrying the nut projecting into the socket, and in the case `of the straight joint the distance indicated at v on the pipe end 1a may be utilized in the adjustment.

The action of the tapered nut in its complementary socket, in conjunction with the pipe end, ordinarily is suiicient'to make a tight fit, but in some instances, especially when high fluid pressure is present the beveled faces of the nut and socket are utilized to secure the sealed jointto prevent leaks.

Such a joint as that of the present invention is especially Valuable in the elimination of union couplings, and may be employed to repair breaks in pipe lines, as for instance as shown in Fig. 2. ln case of a break in a pipe section, the broken part is cut out, and a socket head 45* is threaded on the end of the pipe 2a, after which the new threaded end 1a of pipe is fitted with the coupling nut 7a, and the latter adjusted thereon. rlhe endla is then inserted in the socket member 4a and the nut screwed home to make the joint.

lVhat I claim is- The combination in a coupling with Aa socket member rigid with and forming a continuation of a pipe, said member pro'- vided with an inwardly tapered threaded' portion and a beveled annular face, of a pipe end, a nut externally threaded-thereon and fashioned with an exterior tapered threaded portion complementary to the socket member, and a beveled face on the nut end complementary to the beveled annular face of the socket forming a closed inner joint.

In testimony whereof I aliix myv signature.

LOUIS L. FREUND. 

